Reports / July 2025
Monthly report
July 2025: $2.02B traded on prediction markets
Notional volume across 3 exchanges was $2.02B, −4.8% from June. Polymarket led with a 63.1% share. The busiest day was Mon Jul 7, 2025, at $106M.
Exchanges
Ranked by the month's volume.
| # | Exchange | Volume | Share | vs prior month |
|---|---|---|---|---|
| 1 | Polymarket | $1.27B | 63.1% | −4.6% |
| 2 | Kalshi | $740M | 36.7% | −5.3% |
| 3 | ForecastEx | $4.5M | 0.2% | +8.0% |
What traded
At exchanges that publish a split.
Sports, single-leg 73%Combos (parlays) 0%Non-sports 27%
Daily average: $65.1M over 31 days
Busiest days
- Mon Jul 7, 2025: $106M
- Tue Jul 8, 2025: $106M
- Thu Jul 3, 2025: $76.9M
- Tue Jul 1, 2025: $76.8M
- Tue Jul 29, 2025: $75.4M
July 2025: questions
How much volume did prediction markets trade in July 2025?
$2.02B in notional volume across 3 exchanges, down 5% from June. That is $65.1M a day on average.
Which prediction market had the most volume in July 2025?
Polymarket. The top three were Polymarket ($1.27B, 63.1%), Kalshi ($740M, 36.7%), ForecastEx ($4.5M, 0.2%).
How much prediction market volume was sports in July 2025?
73% at the exchanges that publish a split, including 0% in combos (parlays). Non-sports markets were 27%.
Notional volume: contracts traded × each contract's payout, from each exchange's own daily report. Download every day as CSV · Methods · All reports